← Work
Experiment2026 · Solo Builder· Started(First Commit date)
Gyroball RPM
Android app that measures a gyroball's RPM in real time from camera and audio frequency.
- React Native
- Kotlin
- Monorepo
- Problem
Gyroball users had no objective way to measure their own RPM.
- What I did
- 4-environment monorepo plus a Kotlin native module
- Frequency analysis from camera and audio signals
- Metrics
Experimental stage.
- Outlook
Market is narrow; commercialization is unlikely. Will likely wrap up as a measurement-accuracy experiment.
- QA lens on this call
For a measurement-driven app, the core QA question is less "is the number right?" and more "is the number consistently wrong?" Reproducible error patterns under identical conditions come before accuracy.
- Tech stack
- React Native
- Kotlin
- Monorepo